The former Middlesbrough striker insists United must buy big again this summer.
"I think that you have to be honest, with this team, with this season, if they make top four, great.
"But to take the next step, to challenge for the title as Manchester United always should, they need new players.
"They have too many average players in that team, they have too many young players that maybe could be great players but are not at all close to being great players now.
"So they need two or three to even challenge for the title at United."
Fjortoft believes Solskjaer is doing as well as he can with the players at his disposal.
"Well he's second in the league, don't forget that," Fjortoft continued.
"They are 22 points ahead of Liverpool, what happened to them?"